電動(dòng)截止閥屬于強(qiáng)制密封式閥門,所以在閥門關(guān)閉時(shí),必須向閥瓣施加壓力,以強(qiáng)制密封面不泄漏。當(dāng)介質(zhì)由閥瓣下方進(jìn)入閥門時(shí),操作力所需要克服的阻力,是閥桿和填料的摩擦力與由介質(zhì)的壓力所產(chǎn)生的推力,關(guān)閥門的力比開閥門的力大,所以閥桿的直徑要大,否則會發(fā)生閥桿頂彎的故障。近年來,從自密封的閥門出現(xiàn)后,截止閥的介質(zhì)流向就改由閥瓣上方進(jìn)入閥腔,這時(shí)在介質(zhì)壓力作用下,關(guān)閥門的力小,而開閥門的力大,閥桿的直徑可以相應(yīng)地減少。同時(shí),在介質(zhì)作用下,這種形式的閥門也較嚴(yán)密。我國閥門“三化給”曾規(guī)定,截止閥的流向,一律采用自上而下。
電動(dòng)截止閥開啟時(shí),閥瓣的開啟高度,為公稱直徑的25%~30%時(shí),流量已達(dá)到zui大,表示閥門已達(dá)全開位置。所以截止閥的全開位置,應(yīng)由閥瓣的行程來決定。
J941H-16C DN125結(jié)構(gòu)特點(diǎn)
1、選材考究,符合國內(nèi)、外相關(guān)標(biāo)準(zhǔn),結(jié)構(gòu)合理,造型美觀。
2、閥瓣、閥座密封面采用鐵基合金堆焊或司太立(Slite)鈷基硬質(zhì)合金堆焊而成,耐磨、耐高溫、耐腐蝕、抗擦傷性能好,使用壽命長。
4、閥桿經(jīng)調(diào)質(zhì)及表面氮化處理,有良好的抗腐蝕性和抗擦傷性。
5、可采用各種配管法蘭標(biāo)準(zhǔn)及法蘭密封面型式,滿足各種工程需要及用戶要求。
6、閥體材料品種齊全,填料、墊片可根據(jù)實(shí)際工況或用戶要求合理選配,能適用于各種壓力、溫度及介質(zhì)工況。
7、倒密封采用螺紋連接密封座或本體堆焊奧氏體不銹鋼而成,密封可靠,更換填料可在不停機(jī)情況下進(jìn)行,方便快捷,不影響系統(tǒng)運(yùn)行。
8、配有DZW系列多回轉(zhuǎn)式電動(dòng)裝置,具有殼體小,重量輕,功能全,并可與遠(yuǎn)程電腦配套使用,也可按用戶要求選配電動(dòng)裝置。
電動(dòng)截止閥執(zhí)行標(biāo)準(zhǔn)
設(shè)計(jì)與制造 Design and Manufacture | 結(jié)構(gòu)長度 | 法蘭尺寸 | 壓力-溫度 Pressure Temperature Lating | 試驗(yàn)-檢驗(yàn) Inspection And Test |
GB122235 | GB12221 | GB9113 JB79 | GB9131 | GB/T13927 JB/T9092 |
電動(dòng)截止閥壓力試驗(yàn)
公稱壓力NominalPressure | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
強(qiáng)度試驗(yàn) Shell Test | 2.4 | 3.8 | 6.0 | 9.6 | 15.0 | 24.0 |
水密封試驗(yàn) Water Seal Test | 1.8 | 2.8 | 4.4 | 7.0 | 11.0 | 18.0 |
上密封試驗(yàn)Backseat Test | 1.8 | 2.8 | 4.4 | 7.0 | 11.0 | 18.0 |
氣密封試驗(yàn) Air Seal Test | 0.5-0.7 |
電動(dòng)截止閥主要零件材料及性能
體、蓋、板 Body Cover Disc | 閥桿 | 密封面 Sealing Face | 墊片 | 填料 | 工作溫度℃ Working Temperature | 適用介質(zhì)Suitable Medium | |
WCB | 2Cr13 | 13Cr STL 木體材料 With Body Material 尼龍 Nylon | 增強(qiáng)柔性石墨 Enhanced Flexible Graphite 13Cr/柔性石墨 1Cr13/Flexible Graphite 08軟鋼 08 Soft Steal 0Cr18Ni9Ti 0Cr17Ni12Mo2Ti XD550F(T) PTFE | 柔性石墨 增強(qiáng)柔性石墨 Flexible Graphite Enhanced Flexible Graphite SFB/260 SFP/260 PTFE | ≤425 | 水 蒸汽 油品 Water Steam Petroleum Ptoducts | |
WC1 | 38CrMoAl 25Cr2MoV | ≤450 | |||||
WC6 | ≤540 | ||||||
WC9 | ≤570 | ||||||
C5 C12 | ≤540 | ||||||
ZGCr5Mo | ≤200 | 硝酸類Nitric acid | |||||
ZG1Cr18Ni9Ti | 1Cr18Ni9Ti | ||||||
≤200 | 醋酸類Acetic acid | ||||||
ZG1Cr18Ni12Mo2Ti | 1Cr18Ni12Mo2Ti |
電動(dòng)截止閥規(guī)格 主要尺寸和重量
1.6MPa | DN | L | D | D1 | D2 | b | n-φd | H | Do | 重量 Weight |
凸面 法蘭 16C | 10 | 130 | 90 | 60 | 40 | 14 | 4-14 | 198 | 120 | 4.9 |
15 | 130 | 95 | 65 | 45 | 14 | 4-14 | 218 | 120 | 5.3 | |
20 | 150 | 105 | 75 | 55 | 14 | 4-14 | 258 | 140 | 7.0 | |
25 | 160 | 115 | 85 | 65 | 14 | 4-14 | 275 | 160 | 7.4 | |
32 | 180 | 135 | 100 | 78 | 16 | 4-18 | 280 | 180 | 8.3 | |
40 | 200 | 145 | 110 | 85 | 16 | 4-18 | 330 | 200 | 12.6 | |
50 | 230 | 160 | 125 | 100 | 16 | 4-18 | 350 | 240 | 14 | |
65 | 290 | 180 | 145 | 120 | 18 | 4-18 | 400 | 280 | 22.7 | |
80 | 310 | 195 | 160 | 135 | 20 | 8-18 | 355 | 280 | 29 | |
100 | 350 | 215 | 180 | 155 | 20 | 8-18 | 415 | 320 | 32.8 | |
125 | 400 | 245 | 210 | 185 | 22 | 8-18 | 460 | 360 | 79.5 | |
150 | 480 | 280 | 240 | 210 | 24 | 8-23 | 510 | 400 | 93 | |
200 | 600 | 335 | 295 | 265 | 26 | 12-23 | 710 | 400 | 179 | |
250 | 622 | 405 | 355 | 320 | 30 | 12-25 | 786 | 450 | 441 | |
300 | 698 | 460 | 410 | 375 | 30 | 12-25 | 925 | 500 | 646 |
主要型號:
J941H-10C DN32,J941H-10C DN40,J941H-10C DN50,J941H-10C DN65,J941H-10C DN80,J941H-10C DN100,J941H-10C DN125,J941H-10CDN150,J941H-10C DN200,J941H-10C DN250,J941H-10C DN300,J941H-10C DN350,J941H-10C DN400,J941H-10C DN450,J941H-10C DN500,J941H-10CDN600,J941H-10C DN700,J941H-10C DN800,J941H-10C DN900 J941H-10C DN1000,J941H-16C DN32,J941H-16C DN40,J941H-16C DN50,J941H-16CDN65,J941H-16C DN80,J941H-16C DN100,J941H-16C DN125,J941H-16C DN150,J941H-16C DN200,J941H-16C DN250,J941H-16C DN300,J941H-16CDN350,J941H-16C DN400,J941H-16C DN450,J941H-16C DN500,J941H-16C DN600,J941H-16C DN700,J941H-16C DN800,J941H-16C DN900,J941H-16CDN1000,J941H-25C DN32,J941H-25C DN40,J941H-25C DN50,J941H-25C DN65, J941H-25C DN80,J941H-25C DN100,J941H-25C DN125,J941H-25CDN150,J941H-25C DN200,J941H-25C DN250,J941H-25C DN300,J941H-25C DN350,J941H-25C DN400, J941H-25C DN450,J941H-25CDN500,J941H-25C DN600,J941H-25C DN700,J941H-25C DN800,J941H-25C DN900,J941H-25C DN1000,J941H-40C DN32,J941H-40C DN40, J941H-40CDN50,J941H-40C DN65,J941H-40C DN80,J941H-40C DN100,J941H-40C DN125,J941H-40C DN150,J941H-40C DN200,J941H-40C DN250,J941H-40CDN300,J941H-40C DN350,J941H-40C DN400,J941H-40C DN450,J941H-40C DN500,J941H-40C DN600,J941H-40C DN700,J941H-40C DN800,J941H-40CDN900,J941H-40C DN1000,J941H-64C DN32,J941H-64C DN40,J941H-64C DN50,J941H-64C DN65,J941H-64C DN80,J941H-64C DN100,J941H-64CDN125,J941H-64C DN150,J941H-64C DN200,J941H-64C DN250,J941H-64C DN300,J941H-64C DN350,J941H-64C DN400,J941H-64C DN450,J941H-64CDN500,J941H-64C DN600,J941H-64C DN700,J941H-64C DN800,J941H-64C DN900,J941H-64C DN1000,J941H-100C DN32,J941H-100CDN40,J941H-100C DN50,J941H-100C DN65,J941H-100C DN80,J941H-100C DN100,J941H-100C DN125,J941H-100C DN150,J941H-100C DN200,
J941H-100C DN250,J941H-100C DN300,J941H-100C DN350,J941H-100C DN400,
J941H-100C DN450,J941H-100C DN500,J941H-100C DN600,J941H-100C DN700,
J941H-100C DN800,J941H-100C DN900,J941H-100C DN1000